characteristics of living organisms

• The cell is considered as the basic unit or building block of life.
• Cells can be seen with the aid of a microscope, but they cannot be seen by the naked eye.
• Living things are made up of cells.
• All cells come from pre-existing cells through division.
• All living things have cells.
• All cells are made up of protoplasm, which contains cytoplasm and nucleus.
• Cell theory states that all living things are made up of cells, with some being single-celled while others consist of many cells working together to form tissues, organs, and systems.
• Cytoplasm is composed of water, salts, proteins, carbohydrates, lipids, pigments, enzymes, and other substances.
• A single-celled organism is an organism that consists only of one cell.
• Nucleus is responsible for controlling all activities within the cell.
• Examples of unicellular organisms include bacteria, protozoa, algae, yeast, and some fungi.
• Viruses are not considered living because they cannot reproduce on their own and require host cells to replicate.
• Prokaryotes have no nucleus while eukaryotes do.
• Plants, animals, fungi, bacteria, protozoa, algae, viruses, and lichens all contain cells.
• There are two types of cells: prokaryotic (bacteria) and eukaryotic (plant/animal).
• Prokaryotic cells do not contain membrane-bound organelles or a true nucleus.
• The nucleolus produces ribosomes, which are involved in protein synthesis.
• Chloroplasts contain chlorophyll, which absorbs light energy needed for photosynthesis.
• Ribosomes are found both inside (in eukaryotes) and outside (in prokaryotes) the cell.
• The nucleus is the control center of the cell where DNA is stored.
• A cell is defined as the smallest structural and functional unit of any living thing.
• The cell membrane separates the inside of the cell from its surroundings and controls what enters or leaves the cell.
• Eukaryotic cells contain all these structures except ribosomes.
• The cell is considered as the basic unit of life because it has all the necessary components required for an organism to live.
• Eukaryotic cells contain membrane-bound organelles such as mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosome, vacuole, cytoskeleton, centrioles, and flagella.
• Cells can be classified into two types based on their structure: prokaryotic cells and eukaryotic cells.
• Lysosomes break down food particles and worn out parts of the cell.
• Lysosomes break down old cell parts and digest foreign substances.
• Nucleolus - site of RNA synthesis
• Cells can be classified into two types based on their structure: prokaryotic and eukaryotic.
• Plasma membranes surround prokaryotic and eukaryotic cells and regulate what enters or exits the cell.
• Vacuoles store water, waste products, pigments, and food reserves.
• Vacuoles store water, waste products, pigments, and enzymes.
• The nucleus is surrounded by a double membrane called the nuclear envelope.
• Nucleoli produce ribosomes within the cell.
• Archaea are also prokaryotes but have different types of cell walls compared to bacteria.
• Vacuoles store water, waste products, pigments, and other materials within the cell.
• Bacteria are prokaryotes with a rigid cell wall made up of peptidoglycan, while archaea have no cell walls but instead have a protein coat called S-layer.
• Both types of cells have cytoplasm, which contains various organelles such as mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, cytoskeleton, and ribosomes.
• Bacteria are prokaryotes with a rigid cell wall made up of peptidoglycan.